// console.log((!(~+[])+{})[--[~+""][+[]]*[~+[]]+~~!+[]]+({}+[])[[~!+[]]*~+[]])
var a=['a','b','c'];
var b=a.slice(0,1); 
var c=a.slice(1); 
console.log(a)
var ab=['a','b','c']
var r=ab.splice(1,1,'ache','bug');
console.log(ab,r)